Mercury 4.000 MHz HCMOS / TTL Clock Oscillator – 8-Pin PDIP, ±50 ppm Stability, Through-Hole

Looking for a stable and easy-to-mount timing source for microcontrollers, digital circuits, or communication hardware?
This Mercury 4 MHz oscillator offers a precise clock reference with excellent temperature tolerance, ensuring steady performance across automotive, industrial, and embedded electronics.

The unit operates from a 5 V supply range (4.75 V to 5.25 V) and routes a clean HCMOS/TTL square-wave output, suitable for legacy and modern logic families. Its industry-standard 12.8 mm × 12.8 mm DIP footprint supports fast soldering onto PCBs, test jigs, and socket-based designs.

Whether you’re building timing generators, upgrading legacy circuits, repairing inverter controllers, or developing electronic instruments, this part delivers rock-solid accuracy in a compact metal can package.

Key Features (Bullet Points)

• ✔ 4 MHz fixed-frequency clock source

• ✔ Compatible with TTL & HCMOS logic

• ✔ ±50 ppm stability for long-term accuracy

• ✔ Works in harsh-temperature electronics

• ✔ 5 V supply operation

• ✔ Standard 8-pin DIP footprint

• ✔ Ideal for repairs, development & test circuits

• ✔ Metal-package durability

🟫 Ideal Applications

• Microcontroller clock input

• Digital timing reference

• Communication hardware

• Industrial inverter control boards

• Power electronics control

• Educational electronics projects

• Legacy hardware maintenance
  

  Parameter	Value
  Manufacturer	Mercury
  Model	5H8ET-4.000
  Oscillator Type	Clock Oscillator
  Output Frequency	4 MHz
  Output Logic	HCMOS / TTL
  Frequency Stability	±50 ppm
  Package	8-Pin PDIP through-hole metal package
  Supply Voltage Range	4.75 V – 5.25 V
  Operating Temperature	-40°C to +85°C
  Dimensions (L×W×H)	12.8 × 12.8 × 5.08 mm
  Mounting	Through-Hole
  Application	Timing / frequency reference